2158 lines
71 KiB
C#
2158 lines
71 KiB
C#
#region LICENSE
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/**
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* MIT License
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*
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* Copyright (c) 2019 Denis Zhidkikh
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#endregion
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Globalization;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Text.RegularExpressions;
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namespace Tommy
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{
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#region TOML Nodes
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public abstract class TomlNode : IEnumerable
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{
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public virtual bool HasValue { get; } = false;
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public virtual bool IsArray { get; } = false;
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public virtual bool IsTable { get; } = false;
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public virtual bool IsString { get; } = false;
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public virtual bool IsInteger { get; } = false;
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public virtual bool IsFloat { get; } = false;
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public virtual bool IsDateTime { get; } = false;
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public virtual bool IsBoolean { get; } = false;
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public virtual string Comment { get; set; }
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public virtual int CollapseLevel { get; set; } = 0;
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public virtual TomlTable AsTable => this as TomlTable;
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public virtual TomlString AsString => this as TomlString;
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public virtual TomlInteger AsInteger => this as TomlInteger;
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public virtual TomlFloat AsFloat => this as TomlFloat;
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public virtual TomlBoolean AsBoolean => this as TomlBoolean;
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public virtual TomlDateTime AsDateTime => this as TomlDateTime;
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public virtual TomlArray AsArray => this as TomlArray;
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public virtual int ChildrenCount => 0;
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public virtual TomlNode this[string key]
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{
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get => null;
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set { }
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}
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public virtual TomlNode this[int index]
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{
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get => null;
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set { }
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}
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public virtual IEnumerable<TomlNode> Children
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{
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get { yield break; }
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}
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public virtual IEnumerable<string> Keys
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{
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get { yield break; }
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}
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public IEnumerator GetEnumerator() => Children.GetEnumerator();
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public virtual bool TryGetNode(string key, out TomlNode node)
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{
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node = null;
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return false;
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}
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public virtual bool HasKey(string key) => false;
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public virtual bool HasItemAt(int index) => false;
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public virtual void Add(string key, TomlNode node) { }
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public virtual void Add(TomlNode node) { }
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public virtual void Delete(TomlNode node) { }
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public virtual void Delete(string key) { }
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public virtual void Delete(int index) { }
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public virtual void AddRange(IEnumerable<TomlNode> nodes)
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{
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foreach (var tomlNode in nodes) Add(tomlNode);
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}
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public virtual void ToTomlString(TextWriter tw, string name = null) { }
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#region Native type to TOML cast
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public static implicit operator TomlNode(string value) =>
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new TomlString
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{
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Value = value
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};
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public static implicit operator TomlNode(bool value) =>
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new TomlBoolean
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{
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Value = value
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};
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public static implicit operator TomlNode(long value) =>
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new TomlInteger
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{
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Value = value
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};
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public static implicit operator TomlNode(float value) =>
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new TomlFloat
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{
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Value = value
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};
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public static implicit operator TomlNode(double value) =>
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new TomlFloat
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{
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Value = value
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};
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public static implicit operator TomlNode(DateTime value) =>
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new TomlDateTime
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{
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Value = value
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};
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public static implicit operator TomlNode(TomlNode[] nodes)
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{
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var result = new TomlArray();
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result.AddRange(nodes);
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return result;
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}
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#endregion
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#region TOML to native type cast
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public static implicit operator string(TomlNode value) => value.ToString();
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public static implicit operator int(TomlNode value) => (int) value.AsInteger.Value;
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public static implicit operator long(TomlNode value) => value.AsInteger.Value;
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public static implicit operator float(TomlNode value) => (float) value.AsFloat.Value;
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public static implicit operator double(TomlNode value) => value.AsFloat.Value;
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public static implicit operator bool(TomlNode value) => value.AsBoolean.Value;
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public static implicit operator DateTime(TomlNode value) => value.AsDateTime.Value;
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#endregion
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}
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public class TomlString : TomlNode
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{
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public override bool HasValue { get; } = true;
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public override bool IsString { get; } = true;
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public bool IsMultiline { get; set; }
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public bool PreferLiteral { get; set; }
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public string Value { get; set; }
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public override string ToString() => Value;
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public override void ToTomlString(TextWriter tw, string name = null)
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{
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if (Value.IndexOf(TomlSyntax.LITERAL_STRING_SYMBOL) != -1 && PreferLiteral) PreferLiteral = false;
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var quotes = new string(PreferLiteral ? TomlSyntax.LITERAL_STRING_SYMBOL : TomlSyntax.BASIC_STRING_SYMBOL,
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IsMultiline ? 3 : 1);
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var result = PreferLiteral ? Value : Value.Escape(!IsMultiline);
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tw.Write(quotes);
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tw.Write(result);
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tw.Write(quotes);
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}
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}
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public class TomlInteger : TomlNode
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{
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public enum Base
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{
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Binary = 2,
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Octal = 8,
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Decimal = 10,
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Hexadecimal = 16
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}
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public override bool IsInteger { get; } = true;
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public override bool HasValue { get; } = true;
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public Base IntegerBase { get; set; } = Base.Decimal;
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public long Value { get; set; }
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public override string ToString()
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{
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if (IntegerBase != Base.Decimal)
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return $"0{TomlSyntax.BaseIdentifiers[(int) IntegerBase]}{Convert.ToString(Value, (int) IntegerBase)}";
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return Value.ToString(CultureInfo.InvariantCulture);
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}
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public override void ToTomlString(TextWriter tw, string name = null) => tw.Write(ToString());
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}
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public class TomlFloat : TomlNode
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{
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public override bool IsFloat { get; } = true;
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public override bool HasValue { get; } = true;
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public double Value { get; set; }
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public override string ToString()
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{
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if (double.IsNaN(Value)) return TomlSyntax.NAN_VALUE;
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if (double.IsPositiveInfinity(Value)) return TomlSyntax.INF_VALUE;
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if (double.IsNegativeInfinity(Value)) return TomlSyntax.NEG_INF_VALUE;
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return Value.ToString("G", CultureInfo.InvariantCulture);
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}
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public override void ToTomlString(TextWriter tw, string name = null) => tw.Write(ToString());
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}
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public class TomlBoolean : TomlNode
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{
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public override bool IsBoolean { get; } = true;
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public override bool HasValue { get; } = true;
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public bool Value { get; set; }
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public override string ToString() => Value ? TomlSyntax.TRUE_VALUE : TomlSyntax.FALSE_VALUE;
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public override void ToTomlString(TextWriter tw, string name = null) => tw.Write(ToString());
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}
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public class TomlDateTime : TomlNode
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{
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public override bool IsDateTime { get; } = true;
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public override bool HasValue { get; } = true;
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public bool OnlyDate { get; set; }
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public bool OnlyTime { get; set; }
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public int SecondsPrecision { get; set; }
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public DateTime Value { get; set; }
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public override string ToString()
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{
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if (OnlyDate) return Value.ToString(TomlSyntax.LocalDateFormat);
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if (OnlyTime) return Value.ToString(TomlSyntax.RFC3339LocalTimeFormats[SecondsPrecision]);
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if (Value.Kind == DateTimeKind.Local)
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return Value.ToString(TomlSyntax.RFC3339LocalDateTimeFormats[SecondsPrecision]);
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return Value.ToString(TomlSyntax.RFC3339Formats[SecondsPrecision]);
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}
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public override void ToTomlString(TextWriter tw, string name = null) => tw.Write(ToString());
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}
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public class TomlArray : TomlNode
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{
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private List<TomlNode> values;
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public override bool HasValue { get; } = true;
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public override bool IsArray { get; } = true;
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public bool IsTableArray { get; set; }
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public List<TomlNode> RawArray => values ?? (values = new List<TomlNode>());
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public override TomlNode this[int index]
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{
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get
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{
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if (index < RawArray.Count) return RawArray[index];
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var lazy = new TomlLazy(this);
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this[index] = lazy;
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return lazy;
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}
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set
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{
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if (index == RawArray.Count)
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RawArray.Add(value);
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else
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RawArray[index] = value;
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}
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}
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public override int ChildrenCount => RawArray.Count;
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public override IEnumerable<TomlNode> Children => RawArray.AsEnumerable();
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public override void Add(TomlNode node) => RawArray.Add(node);
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public override void AddRange(IEnumerable<TomlNode> nodes) => RawArray.AddRange(nodes);
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public override void Delete(TomlNode node) => RawArray.Remove(node);
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public override void Delete(int index) => RawArray.RemoveAt(index);
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public override string ToString()
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{
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var sb = new StringBuilder();
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sb.Append(TomlSyntax.ARRAY_START_SYMBOL);
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if (ChildrenCount != 0)
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{
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sb.Append(' ');
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foreach (var tomlNode in RawArray)
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sb.Append(tomlNode.ToString()).Append(TomlSyntax.ITEM_SEPARATOR).Append(' ');
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}
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sb.Append(TomlSyntax.ARRAY_END_SYMBOL);
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return sb.ToString();
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}
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public override void ToTomlString(TextWriter tw, string name = null)
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{
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// If it's a normal array, write it as usual
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if (!IsTableArray)
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{
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tw.Write(ToString());
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return;
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}
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tw.WriteLine();
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Comment?.AsComment(tw);
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tw.Write(TomlSyntax.ARRAY_START_SYMBOL);
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tw.Write(TomlSyntax.ARRAY_START_SYMBOL);
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tw.Write(name);
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tw.Write(TomlSyntax.ARRAY_END_SYMBOL);
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tw.Write(TomlSyntax.ARRAY_END_SYMBOL);
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tw.WriteLine();
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var first = true;
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foreach (var tomlNode in RawArray)
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{
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if (!(tomlNode is TomlTable tbl))
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throw new TomlFormatException("The array is marked as array table but contains non-table nodes!");
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// Ensure it's parsed as a section
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tbl.IsInline = false;
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if (!first)
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{
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tw.WriteLine();
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Comment?.AsComment(tw);
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tw.Write(TomlSyntax.ARRAY_START_SYMBOL);
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tw.Write(TomlSyntax.ARRAY_START_SYMBOL);
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tw.Write(name);
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tw.Write(TomlSyntax.ARRAY_END_SYMBOL);
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tw.Write(TomlSyntax.ARRAY_END_SYMBOL);
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tw.WriteLine();
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}
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first = false;
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// Don't pass section name because we already specified it
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tbl.ToTomlString(tw);
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tw.WriteLine();
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}
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}
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}
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public class TomlTable : TomlNode
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{
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private Dictionary<string, TomlNode> children;
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public override bool HasValue { get; } = false;
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public override bool IsTable { get; } = true;
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public bool IsInline { get; set; }
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public Dictionary<string, TomlNode> RawTable => children ?? (children = new Dictionary<string, TomlNode>());
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public override TomlNode this[string key]
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{
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get
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{
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if (RawTable.TryGetValue(key, out var result)) return result;
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var lazy = new TomlLazy(this);
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RawTable[key] = lazy;
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return lazy;
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}
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set => RawTable[key] = value;
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}
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public override int ChildrenCount => RawTable.Count;
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public override IEnumerable<TomlNode> Children => RawTable.Select(kv => kv.Value);
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public override IEnumerable<string> Keys => RawTable.Select(kv => kv.Key);
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public override bool HasKey(string key) => RawTable.ContainsKey(key);
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public override void Add(string key, TomlNode node) => RawTable.Add(key, node);
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public override bool TryGetNode(string key, out TomlNode node) => RawTable.TryGetValue(key, out node);
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public override void Delete(TomlNode node) => RawTable.Remove(RawTable.First(kv => kv.Value == node).Key);
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public override void Delete(string key) => RawTable.Remove(key);
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public override string ToString()
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{
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var sb = new StringBuilder();
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sb.Append(TomlSyntax.INLINE_TABLE_START_SYMBOL);
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if (ChildrenCount != 0)
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{
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sb.Append(' ');
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foreach (var child in RawTable)
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sb.Append(child.Key.AsKey())
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.Append(' ')
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.Append(TomlSyntax.KEY_VALUE_SEPARATOR)
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.Append(' ')
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.Append(child.Value.ToString())
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.Append(TomlSyntax.ITEM_SEPARATOR)
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.Append(' ');
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foreach (var collapsedItem in CollectCollapsedItems())
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sb.Append(collapsedItem.Key)
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.Append(' ')
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.Append(TomlSyntax.KEY_VALUE_SEPARATOR)
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.Append(' ')
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.Append(collapsedItem.Value.ToString())
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.Append(TomlSyntax.ITEM_SEPARATOR)
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.Append(' ');
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}
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sb.Append(TomlSyntax.INLINE_TABLE_END_SYMBOL);
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return sb.ToString();
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}
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private Dictionary<string, TomlNode> CollectCollapsedItems(string prefix = "",
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Dictionary<string, TomlNode> nodes = null,
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int level = 0)
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{
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if (nodes == null)
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{
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nodes = new Dictionary<string, TomlNode>();
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foreach (var keyValuePair in RawTable)
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{
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var node = keyValuePair.Value;
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var key = keyValuePair.Key.AsKey();
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if (node is TomlTable tbl)
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tbl.CollectCollapsedItems($"{prefix}{key}.", nodes, level + 1);
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}
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return nodes;
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}
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foreach (var keyValuePair in RawTable)
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{
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var node = keyValuePair.Value;
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var key = keyValuePair.Key.AsKey();
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if (node.CollapseLevel == level)
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nodes.Add($"{prefix}{key}", node);
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else if (node is TomlTable tbl)
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tbl.CollectCollapsedItems($"{prefix}{key}.", nodes, level + 1);
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}
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return nodes;
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}
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public override void ToTomlString(TextWriter tw, string name = null)
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{
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// The table is inline table
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if (IsInline && name != null)
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{
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tw.Write(ToString());
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return;
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}
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if (RawTable.All(n => n.Value.CollapseLevel != 0))
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return;
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var hasRealValues = !RawTable.All(n => n.Value is TomlTable tbl && !tbl.IsInline);
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var collapsedItems = CollectCollapsedItems();
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Comment?.AsComment(tw);
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if (name != null && (hasRealValues || collapsedItems.Count > 0))
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{
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tw.Write(TomlSyntax.ARRAY_START_SYMBOL);
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tw.Write(name);
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tw.Write(TomlSyntax.ARRAY_END_SYMBOL);
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tw.WriteLine();
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}
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else if (Comment != null) // Add some spacing between the first node and the comment
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{
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tw.WriteLine();
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}
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var namePrefix = name == null ? "" : $"{name}.";
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var first = true;
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var sectionableItems = new Dictionary<string, TomlNode>();
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foreach (var child in RawTable)
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{
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// If value should be parsed as section, separate if from the bunch
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if (child.Value is TomlArray arr && arr.IsTableArray || child.Value is TomlTable tbl && !tbl.IsInline)
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{
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sectionableItems.Add(child.Key, child.Value);
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continue;
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}
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// If the vallue is collapsed, it belongs to the parent
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if (child.Value.CollapseLevel != 0)
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continue;
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if (!first) tw.WriteLine();
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first = false;
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var key = child.Key.AsKey();
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child.Value.Comment?.AsComment(tw);
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tw.Write(key);
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tw.Write(' ');
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tw.Write(TomlSyntax.KEY_VALUE_SEPARATOR);
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tw.Write(' ');
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child.Value.ToTomlString(tw, $"{namePrefix}{key}");
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}
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foreach (var collapsedItem in collapsedItems)
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{
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if (collapsedItem.Value is TomlArray arr && arr.IsTableArray ||
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collapsedItem.Value is TomlTable tbl && !tbl.IsInline)
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throw new
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TomlFormatException($"Value {collapsedItem.Key} cannot be defined as collpased, because it is not an inline value!");
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tw.WriteLine();
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var key = collapsedItem.Key;
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collapsedItem.Value.Comment?.AsComment(tw);
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tw.Write(key);
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tw.Write(' ');
|
|
tw.Write(TomlSyntax.KEY_VALUE_SEPARATOR);
|
|
tw.Write(' ');
|
|
|
|
collapsedItem.Value.ToTomlString(tw, $"{namePrefix}{key}");
|
|
}
|
|
|
|
if (sectionableItems.Count == 0)
|
|
return;
|
|
|
|
tw.WriteLine();
|
|
tw.WriteLine();
|
|
first = true;
|
|
foreach (var child in sectionableItems)
|
|
{
|
|
if (!first) tw.WriteLine();
|
|
first = false;
|
|
|
|
child.Value.ToTomlString(tw, $"{namePrefix}{child.Key}");
|
|
}
|
|
}
|
|
}
|
|
|
|
internal class TomlLazy : TomlNode
|
|
{
|
|
private readonly TomlNode parent;
|
|
private TomlNode replacement;
|
|
|
|
public TomlLazy(TomlNode parent) => this.parent = parent;
|
|
|
|
public override TomlNode this[int index]
|
|
{
|
|
get => Set<TomlArray>()[index];
|
|
set => Set<TomlArray>()[index] = value;
|
|
}
|
|
|
|
public override TomlNode this[string key]
|
|
{
|
|
get => Set<TomlTable>()[key];
|
|
set => Set<TomlTable>()[key] = value;
|
|
}
|
|
|
|
public override void Add(TomlNode node) => Set<TomlArray>().Add(node);
|
|
|
|
public override void Add(string key, TomlNode node) => Set<TomlTable>().Add(key, node);
|
|
|
|
public override void AddRange(IEnumerable<TomlNode> nodes) => Set<TomlArray>().AddRange(nodes);
|
|
|
|
private TomlNode Set<T>() where T : TomlNode, new()
|
|
{
|
|
if (replacement != null) return replacement;
|
|
|
|
var newNode = new T
|
|
{
|
|
Comment = Comment
|
|
};
|
|
|
|
if (parent.IsTable)
|
|
{
|
|
var key = parent.Keys.FirstOrDefault(s => parent.TryGetNode(s, out var node) && node.Equals(this));
|
|
if (key == null) return default(T);
|
|
|
|
parent[key] = newNode;
|
|
}
|
|
else if (parent.IsArray)
|
|
{
|
|
var index = 0;
|
|
foreach (var child in parent.Children)
|
|
{
|
|
if (child == this) break;
|
|
index++;
|
|
}
|
|
|
|
if (index == parent.ChildrenCount) return default(T);
|
|
|
|
parent[index] = newNode;
|
|
}
|
|
else
|
|
{
|
|
return default(T);
|
|
}
|
|
|
|
replacement = newNode;
|
|
return newNode;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Parser
|
|
|
|
public class TOMLParser : IDisposable
|
|
{
|
|
public enum ParseState
|
|
{
|
|
None,
|
|
KeyValuePair,
|
|
SkipToNextLine,
|
|
Table
|
|
}
|
|
|
|
private readonly TextReader reader;
|
|
|
|
private ParseState currentState;
|
|
private int line, col;
|
|
private List<TomlSyntaxException> syntaxErrors;
|
|
|
|
public TOMLParser(TextReader reader)
|
|
{
|
|
this.reader = reader;
|
|
line = col = 0;
|
|
}
|
|
|
|
public bool ForceASCII { get; set; }
|
|
|
|
public void Dispose()
|
|
{
|
|
reader?.Dispose();
|
|
}
|
|
|
|
public TomlTable Parse()
|
|
{
|
|
syntaxErrors = new List<TomlSyntaxException>();
|
|
line = col = 0;
|
|
var rootNode = new TomlTable();
|
|
var currentNode = rootNode;
|
|
currentState = ParseState.None;
|
|
var keyParts = new List<string>();
|
|
var arrayTable = false;
|
|
var latestComment = new StringBuilder();
|
|
var firstComment = true;
|
|
|
|
int currentChar;
|
|
while ((currentChar = reader.Peek()) >= 0)
|
|
{
|
|
var c = (char) currentChar;
|
|
|
|
if (currentState == ParseState.None)
|
|
{
|
|
// Skip white space
|
|
if (TomlSyntax.IsWhiteSpace(c)) goto consume_character;
|
|
|
|
if (TomlSyntax.IsNewLine(c))
|
|
{
|
|
// Check if there are any comments and so far no items being declared
|
|
if (latestComment.Length != 0 && firstComment)
|
|
{
|
|
rootNode.Comment = latestComment.ToString().TrimEnd();
|
|
latestComment.Length = 0;
|
|
firstComment = false;
|
|
}
|
|
|
|
if (TomlSyntax.IsLineBreak(c))
|
|
AdvanceLine();
|
|
|
|
goto consume_character;
|
|
}
|
|
|
|
// Start of a comment; ignore until newline
|
|
if (c == TomlSyntax.COMMENT_SYMBOL)
|
|
{
|
|
// Consume the comment symbol and buffer the whole comment line
|
|
reader.Read();
|
|
latestComment.AppendLine(reader.ReadLine()?.Trim());
|
|
AdvanceLine(0);
|
|
continue;
|
|
}
|
|
|
|
// Encountered a non-comment value. The comment must belong to it (ignore possible newlines)!
|
|
firstComment = false;
|
|
|
|
if (c == TomlSyntax.TABLE_START_SYMBOL)
|
|
{
|
|
currentState = ParseState.Table;
|
|
goto consume_character;
|
|
}
|
|
|
|
if (TomlSyntax.IsBareKey(c) || TomlSyntax.IsQuoted(c))
|
|
{
|
|
currentState = ParseState.KeyValuePair;
|
|
}
|
|
else
|
|
{
|
|
AddError($"Unexpected character \"{c}\"");
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (currentState == ParseState.KeyValuePair)
|
|
{
|
|
var keyValuePair = ReadKeyValuePair(keyParts);
|
|
|
|
if (keyValuePair == null)
|
|
{
|
|
latestComment.Length = 0;
|
|
keyParts.Clear();
|
|
|
|
if (currentState != ParseState.None)
|
|
AddError("Failed to parse key-value pair!");
|
|
continue;
|
|
}
|
|
|
|
keyValuePair.Comment = latestComment.ToString().TrimEnd();
|
|
var inserted = InsertNode(keyValuePair, currentNode, keyParts);
|
|
latestComment.Length = 0;
|
|
keyParts.Clear();
|
|
if (inserted)
|
|
currentState = ParseState.SkipToNextLine;
|
|
continue;
|
|
}
|
|
|
|
if (currentState == ParseState.Table)
|
|
{
|
|
if (keyParts.Count == 0)
|
|
{
|
|
// We have array table
|
|
if (c == TomlSyntax.TABLE_START_SYMBOL)
|
|
{
|
|
// Consume the character
|
|
ConsumeChar();
|
|
arrayTable = true;
|
|
}
|
|
|
|
if (!ReadKeyName(ref keyParts, TomlSyntax.TABLE_END_SYMBOL, true))
|
|
{
|
|
keyParts.Clear();
|
|
continue;
|
|
}
|
|
|
|
if (keyParts.Count == 0)
|
|
{
|
|
AddError("Table name is emtpy.");
|
|
arrayTable = false;
|
|
latestComment.Length = 0;
|
|
keyParts.Clear();
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
if (c == TomlSyntax.TABLE_END_SYMBOL)
|
|
{
|
|
if (arrayTable)
|
|
{
|
|
// Consume the ending bracket so we can peek the next character
|
|
ConsumeChar();
|
|
var nextChar = reader.Peek();
|
|
if (nextChar < 0 || (char) nextChar != TomlSyntax.TABLE_END_SYMBOL)
|
|
{
|
|
AddError($"Array table {".".Join(keyParts)} has only one closing bracket.");
|
|
keyParts.Clear();
|
|
arrayTable = false;
|
|
latestComment.Length = 0;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
currentNode = CreateTable(rootNode, keyParts, arrayTable);
|
|
if (currentNode != null)
|
|
{
|
|
currentNode.IsInline = false;
|
|
currentNode.Comment = latestComment.ToString().TrimEnd();
|
|
}
|
|
|
|
keyParts.Clear();
|
|
arrayTable = false;
|
|
latestComment.Length = 0;
|
|
|
|
if (currentNode == null)
|
|
{
|
|
if (currentState != ParseState.None)
|
|
AddError("Error creating table array!");
|
|
continue;
|
|
}
|
|
|
|
currentState = ParseState.SkipToNextLine;
|
|
goto consume_character;
|
|
}
|
|
|
|
if (keyParts.Count != 0)
|
|
{
|
|
AddError($"Unexpected character \"{c}\"");
|
|
keyParts.Clear();
|
|
arrayTable = false;
|
|
latestComment.Length = 0;
|
|
}
|
|
}
|
|
|
|
if (currentState == ParseState.SkipToNextLine)
|
|
{
|
|
if (TomlSyntax.IsWhiteSpace(c) || c == TomlSyntax.NEWLINE_CARRIAGE_RETURN_CHARACTER)
|
|
goto consume_character;
|
|
|
|
if (c == TomlSyntax.COMMENT_SYMBOL || c == TomlSyntax.NEWLINE_CHARACTER)
|
|
{
|
|
currentState = ParseState.None;
|
|
AdvanceLine();
|
|
|
|
if (c == TomlSyntax.COMMENT_SYMBOL)
|
|
{
|
|
col++;
|
|
reader.ReadLine();
|
|
continue;
|
|
}
|
|
|
|
goto consume_character;
|
|
}
|
|
|
|
AddError($"Unexpected character \"{c}\" at the end of the line.");
|
|
}
|
|
|
|
consume_character:
|
|
reader.Read();
|
|
col++;
|
|
}
|
|
|
|
if (currentState != ParseState.None && currentState != ParseState.SkipToNextLine)
|
|
AddError("Unexpected end of file!");
|
|
|
|
if (syntaxErrors.Count > 0)
|
|
throw new TomlParseException(rootNode, syntaxErrors);
|
|
|
|
return rootNode;
|
|
}
|
|
|
|
private bool AddError(string message)
|
|
{
|
|
syntaxErrors.Add(new TomlSyntaxException(message, currentState, line, col));
|
|
|
|
// Skip the whole line in hope that it was only a single faulty value (and non-multiline one at that)
|
|
reader.ReadLine();
|
|
AdvanceLine(0);
|
|
currentState = ParseState.None;
|
|
return false;
|
|
}
|
|
|
|
private void AdvanceLine(int startCol = -1)
|
|
{
|
|
line++;
|
|
col = startCol;
|
|
}
|
|
|
|
private int ConsumeChar()
|
|
{
|
|
col++;
|
|
return reader.Read();
|
|
}
|
|
|
|
#region Key-Value pair parsing
|
|
|
|
/**
|
|
* Reads a single key-value pair.
|
|
* Assumes the cursor is at the first character that belong to the pair (including possible whitespace).
|
|
* Consumes all characters that belong to the key and the value (ignoring possible trailing whitespace at the end).
|
|
*
|
|
* Example:
|
|
* foo = "bar" ==> foo = "bar"
|
|
* ^ ^
|
|
*/
|
|
|
|
private TomlNode ReadKeyValuePair(List<string> keyParts)
|
|
{
|
|
int cur;
|
|
while ((cur = reader.Peek()) >= 0)
|
|
{
|
|
var c = (char) cur;
|
|
|
|
if (TomlSyntax.IsQuoted(c) || TomlSyntax.IsBareKey(c))
|
|
{
|
|
if (keyParts.Count != 0)
|
|
{
|
|
AddError("Encountered extra characters in key definition!");
|
|
return null;
|
|
}
|
|
|
|
if (!ReadKeyName(ref keyParts, TomlSyntax.KEY_VALUE_SEPARATOR))
|
|
return null;
|
|
|
|
continue;
|
|
}
|
|
|
|
if (TomlSyntax.IsWhiteSpace(c))
|
|
{
|
|
ConsumeChar();
|
|
continue;
|
|
}
|
|
|
|
if (c == TomlSyntax.KEY_VALUE_SEPARATOR)
|
|
{
|
|
ConsumeChar();
|
|
return ReadValue();
|
|
}
|
|
|
|
AddError($"Unexpected character \"{c}\" in key name.");
|
|
return null;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Reads a single value.
|
|
* Assumes the cursor is at the first character that belongs to the value (including possible starting whitespace).
|
|
* Consumes all characters belonging to the value (ignoring possible trailing whitespace at the end).
|
|
*
|
|
* Example:
|
|
* "test" ==> "test"
|
|
* ^ ^
|
|
*/
|
|
|
|
private TomlNode ReadValue(bool skipNewlines = false)
|
|
{
|
|
int cur;
|
|
while ((cur = reader.Peek()) >= 0)
|
|
{
|
|
var c = (char) cur;
|
|
|
|
if (TomlSyntax.IsWhiteSpace(c))
|
|
{
|
|
ConsumeChar();
|
|
continue;
|
|
}
|
|
|
|
if (c == TomlSyntax.COMMENT_SYMBOL)
|
|
{
|
|
AddError("No value found!");
|
|
return null;
|
|
}
|
|
|
|
if (TomlSyntax.IsNewLine(c))
|
|
{
|
|
if (skipNewlines)
|
|
{
|
|
reader.Read();
|
|
AdvanceLine(0);
|
|
continue;
|
|
}
|
|
|
|
AddError("Encountered a newline when expecting a value!");
|
|
return null;
|
|
}
|
|
|
|
if (TomlSyntax.IsQuoted(c))
|
|
{
|
|
var isMultiline = IsTripleQuote(c, out var excess);
|
|
|
|
// Error occurred in triple quote parsing
|
|
if (currentState == ParseState.None)
|
|
return null;
|
|
|
|
var value = isMultiline
|
|
? ReadQuotedValueMultiLine(c)
|
|
: ReadQuotedValueSingleLine(c, excess);
|
|
|
|
return new TomlString
|
|
{
|
|
Value = value,
|
|
IsMultiline = isMultiline,
|
|
PreferLiteral = c == TomlSyntax.LITERAL_STRING_SYMBOL
|
|
};
|
|
}
|
|
|
|
if (c == TomlSyntax.INLINE_TABLE_START_SYMBOL) return ReadInlineTable();
|
|
|
|
if (c == TomlSyntax.ARRAY_START_SYMBOL) return ReadArray();
|
|
|
|
return ReadTomlValue();
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Reads a single key name.
|
|
* Assumes the cursor is at the first character belonging to the key (with possible trailing whitespace if `skipWhitespace = true`).
|
|
* Consumes all the characters until the `until` character is met (but does not consume the character itself).
|
|
*
|
|
* Example 1:
|
|
* foo.bar ==> foo.bar (`skipWhitespace = false`, `until = ' '`)
|
|
* ^ ^
|
|
*
|
|
* Example 2:
|
|
* [ foo . bar ] ==> [ foo . bar ] (`skipWhitespace = true`, `until = ']'`)
|
|
* ^ ^
|
|
*/
|
|
|
|
private bool ReadKeyName(ref List<string> parts, char until, bool skipWhitespace = false)
|
|
{
|
|
var buffer = new StringBuilder();
|
|
var quoted = false;
|
|
var prevWasSpace = false;
|
|
int cur;
|
|
while ((cur = reader.Peek()) >= 0)
|
|
{
|
|
var c = (char) cur;
|
|
|
|
// Reached the final character
|
|
if (c == until) break;
|
|
|
|
if (TomlSyntax.IsWhiteSpace(c))
|
|
if (skipWhitespace)
|
|
{
|
|
prevWasSpace = true;
|
|
goto consume_character;
|
|
}
|
|
else
|
|
{
|
|
break;
|
|
}
|
|
|
|
if (buffer.Length == 0) prevWasSpace = false;
|
|
|
|
if (c == TomlSyntax.SUBKEY_SEPARATOR)
|
|
{
|
|
if (buffer.Length == 0)
|
|
return AddError($"Found an extra subkey separator in {".".Join(parts)}...");
|
|
|
|
parts.Add(buffer.ToString());
|
|
buffer.Length = 0;
|
|
quoted = false;
|
|
prevWasSpace = false;
|
|
goto consume_character;
|
|
}
|
|
|
|
if (prevWasSpace)
|
|
return AddError("Invalid spacing in key name");
|
|
|
|
if (TomlSyntax.IsQuoted(c))
|
|
{
|
|
if (quoted)
|
|
|
|
return AddError("Expected a subkey separator but got extra data instead!");
|
|
|
|
if (buffer.Length != 0)
|
|
return AddError("Encountered a quote in the middle of subkey name!");
|
|
|
|
// Consume the quote character and read the key name
|
|
col++;
|
|
buffer.Append(ReadQuotedValueSingleLine((char) reader.Read()));
|
|
quoted = true;
|
|
continue;
|
|
}
|
|
|
|
if (TomlSyntax.IsBareKey(c))
|
|
{
|
|
buffer.Append(c);
|
|
goto consume_character;
|
|
}
|
|
|
|
// If we see an invalid symbol, let the next parser handle it
|
|
break;
|
|
|
|
consume_character:
|
|
reader.Read();
|
|
col++;
|
|
}
|
|
|
|
if (buffer.Length == 0)
|
|
return AddError($"Found an extra subkey separator in {".".Join(parts)}...");
|
|
|
|
parts.Add(buffer.ToString());
|
|
|
|
return true;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Non-string value parsing
|
|
|
|
/**
|
|
* Reads the whole raw value until the first non-value character is encountered.
|
|
* Assumes the cursor start position at the first value character and consumes all characters that may be related to the value.
|
|
* Example:
|
|
*
|
|
* 1_0_0_0 ==> 1_0_0_0
|
|
* ^ ^
|
|
*/
|
|
|
|
private string ReadRawValue()
|
|
{
|
|
var result = new StringBuilder();
|
|
|
|
int cur;
|
|
while ((cur = reader.Peek()) >= 0)
|
|
{
|
|
var c = (char) cur;
|
|
|
|
if (c == TomlSyntax.COMMENT_SYMBOL || TomlSyntax.IsNewLine(c) || TomlSyntax.IsValueSeparator(c)) break;
|
|
|
|
result.Append(c);
|
|
|
|
ConsumeChar();
|
|
}
|
|
|
|
// Replace trim with manual space counting?
|
|
return result.ToString().Trim();
|
|
}
|
|
|
|
/**
|
|
* Reads and parses a non-string, non-composite TOML value.
|
|
* Assumes the cursor at the first character that is related to the value (with possible spaces).
|
|
* Consumes all the characters that are related to the value.
|
|
*
|
|
* Example
|
|
* 1_0_0_0 # This is a comment <newline> ==> 1_0_0_0 # This is a comment
|
|
* ^ ^
|
|
*/
|
|
|
|
private TomlNode ReadTomlValue()
|
|
{
|
|
var value = ReadRawValue();
|
|
|
|
if (TomlSyntax.IsBoolean(value)) return bool.Parse(value);
|
|
|
|
if (TomlSyntax.IsNaN(value)) return double.NaN;
|
|
|
|
if (TomlSyntax.IsPosInf(value)) return double.PositiveInfinity;
|
|
|
|
if (TomlSyntax.IsNegInf(value)) return double.NegativeInfinity;
|
|
|
|
if (TomlSyntax.IsInteger(value))
|
|
return long.Parse(value.RemoveAll(TomlSyntax.INT_NUMBER_SEPARATOR), CultureInfo.InvariantCulture);
|
|
|
|
if (TomlSyntax.IsFloat(value))
|
|
return double.Parse(value.RemoveAll(TomlSyntax.INT_NUMBER_SEPARATOR), CultureInfo.InvariantCulture);
|
|
|
|
if (TomlSyntax.IsIntegerWithBase(value, out var numberBase))
|
|
return new TomlInteger
|
|
{
|
|
Value = Convert.ToInt64(value.Substring(2).RemoveAll(TomlSyntax.INT_NUMBER_SEPARATOR), numberBase),
|
|
IntegerBase = (TomlInteger.Base) numberBase
|
|
};
|
|
|
|
value = value.Replace("T", " ");
|
|
if (StringUtils.TryParseDateTime(value,
|
|
TomlSyntax.RFC3339LocalDateTimeFormats,
|
|
DateTimeStyles.AssumeLocal,
|
|
out var dateTimeResult,
|
|
out var precision))
|
|
return new TomlDateTime
|
|
{
|
|
Value = dateTimeResult,
|
|
SecondsPrecision = precision
|
|
};
|
|
|
|
if (StringUtils.TryParseDateTime(value,
|
|
TomlSyntax.RFC3339Formats,
|
|
DateTimeStyles.AdjustToUniversal | DateTimeStyles.AssumeUniversal,
|
|
out dateTimeResult,
|
|
out precision))
|
|
return new TomlDateTime
|
|
{
|
|
Value = dateTimeResult,
|
|
SecondsPrecision = precision
|
|
};
|
|
|
|
|
|
if (DateTime.TryParseExact(value,
|
|
TomlSyntax.LocalDateFormat,
|
|
CultureInfo.InvariantCulture,
|
|
DateTimeStyles.AssumeLocal,
|
|
out dateTimeResult))
|
|
return new TomlDateTime
|
|
{
|
|
Value = dateTimeResult,
|
|
OnlyDate = true
|
|
};
|
|
|
|
if (StringUtils.TryParseDateTime(value,
|
|
TomlSyntax.RFC3339LocalTimeFormats,
|
|
DateTimeStyles.AssumeLocal,
|
|
out dateTimeResult,
|
|
out precision))
|
|
return new TomlDateTime
|
|
{
|
|
Value = dateTimeResult,
|
|
OnlyTime = true,
|
|
SecondsPrecision = precision
|
|
};
|
|
|
|
AddError($"Value \"{value}\" is not a valid TOML 0.5.0 value!");
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Reads an array value.
|
|
* Assumes the cursor is at the start of the array definition. Reads all character until the array closing bracket.
|
|
*
|
|
* Example:
|
|
* [1, 2, 3] ==> [1, 2, 3]
|
|
* ^ ^
|
|
*/
|
|
|
|
private TomlArray ReadArray()
|
|
{
|
|
// Consume the start of array character
|
|
ConsumeChar();
|
|
|
|
var result = new TomlArray();
|
|
|
|
TomlNode currentValue = null;
|
|
|
|
int cur;
|
|
while ((cur = reader.Peek()) >= 0)
|
|
{
|
|
var c = (char) cur;
|
|
|
|
if (c == TomlSyntax.ARRAY_END_SYMBOL)
|
|
{
|
|
ConsumeChar();
|
|
break;
|
|
}
|
|
|
|
if (c == TomlSyntax.COMMENT_SYMBOL)
|
|
{
|
|
reader.ReadLine();
|
|
AdvanceLine(0);
|
|
continue;
|
|
}
|
|
|
|
if (TomlSyntax.IsWhiteSpace(c) || TomlSyntax.IsNewLine(c))
|
|
{
|
|
if (TomlSyntax.IsLineBreak(c))
|
|
AdvanceLine();
|
|
goto consume_character;
|
|
}
|
|
|
|
if (c == TomlSyntax.ITEM_SEPARATOR)
|
|
{
|
|
if (currentValue == null)
|
|
{
|
|
AddError("Encountered multiple value separators in an array!");
|
|
return null;
|
|
}
|
|
|
|
result.Add(currentValue);
|
|
currentValue = null;
|
|
goto consume_character;
|
|
}
|
|
|
|
currentValue = ReadValue(true);
|
|
|
|
if (currentValue == null)
|
|
{
|
|
if (currentState != ParseState.None)
|
|
AddError("Failed to determine and parse a value!");
|
|
return null;
|
|
}
|
|
|
|
if (result.ChildrenCount != 0 && result[0].GetType() != currentValue.GetType())
|
|
{
|
|
AddError($"Arrays cannot have mixed types! Inferred type: {result[0].GetType().FullName}. Element type: {currentValue.GetType().FullName}");
|
|
return null;
|
|
}
|
|
|
|
continue;
|
|
|
|
consume_character:
|
|
ConsumeChar();
|
|
}
|
|
|
|
if (currentValue != null) result.Add(currentValue);
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Reads an inline table.
|
|
* Assumes the cursor is at the start of the table definition. Reads all character until the table closing bracket.
|
|
*
|
|
* Example:
|
|
* { test = "foo", value = 1 } ==> { test = "foo", value = 1 }
|
|
* ^ ^
|
|
*/
|
|
|
|
private TomlNode ReadInlineTable()
|
|
{
|
|
ConsumeChar();
|
|
|
|
var result = new TomlTable
|
|
{
|
|
IsInline = true
|
|
};
|
|
|
|
TomlNode currentValue = null;
|
|
|
|
var keyParts = new List<string>();
|
|
|
|
int cur;
|
|
while ((cur = reader.Peek()) >= 0)
|
|
{
|
|
var c = (char) cur;
|
|
|
|
if (c == TomlSyntax.INLINE_TABLE_END_SYMBOL)
|
|
{
|
|
ConsumeChar();
|
|
break;
|
|
}
|
|
|
|
if (c == TomlSyntax.COMMENT_SYMBOL)
|
|
{
|
|
AddError("Incomplete inline table definition!");
|
|
return null;
|
|
}
|
|
|
|
if (TomlSyntax.IsNewLine(c))
|
|
{
|
|
AddError("Inline tables are only allowed to be on single line");
|
|
return null;
|
|
}
|
|
|
|
if (TomlSyntax.IsWhiteSpace(c))
|
|
goto consume_character;
|
|
|
|
if (c == TomlSyntax.ITEM_SEPARATOR)
|
|
{
|
|
if (currentValue == null)
|
|
{
|
|
AddError("Encountered multiple value separators in inline table!");
|
|
return null;
|
|
}
|
|
|
|
if (!InsertNode(currentValue, result, keyParts))
|
|
return null;
|
|
keyParts.Clear();
|
|
currentValue = null;
|
|
goto consume_character;
|
|
}
|
|
|
|
currentValue = ReadKeyValuePair(keyParts);
|
|
continue;
|
|
|
|
consume_character:
|
|
ConsumeChar();
|
|
}
|
|
|
|
if (currentValue != null && !InsertNode(currentValue, result, keyParts))
|
|
return null;
|
|
|
|
return result;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region String parsing
|
|
|
|
/**
|
|
* Checks if the string value a multiline string (i.e. a triple quoted string).
|
|
* Assumes the cursor is at the first quote character. Consumes the least amount of characters needed to determine if the string is multiline.
|
|
*
|
|
* If the result is false, returns the consumed character through the `excess` variable.
|
|
*
|
|
* Example 1:
|
|
* """test""" ==> """test"""
|
|
* ^ ^
|
|
*
|
|
* Example 2:
|
|
* "test" ==> "test" (doesn't return the first quote)
|
|
* ^ ^
|
|
*
|
|
* Example 3:
|
|
* "" ==> "" (returns the extra `"` through the `excess` variable)
|
|
* ^ ^
|
|
*/
|
|
private bool IsTripleQuote(char quote, out char excess)
|
|
{
|
|
// Copypasta, but it's faster...
|
|
|
|
int cur;
|
|
// Consume the first quote
|
|
ConsumeChar();
|
|
|
|
if ((cur = reader.Peek()) < 0)
|
|
{
|
|
excess = '\0';
|
|
return AddError("Unexpected end of file!");
|
|
}
|
|
|
|
|
|
if ((char) cur != quote)
|
|
{
|
|
excess = '\0';
|
|
return false;
|
|
}
|
|
|
|
// Consume the second quote
|
|
excess = (char) ConsumeChar();
|
|
|
|
if ((cur = reader.Peek()) < 0 || (char) cur != quote) return false;
|
|
|
|
// Consume the final quote
|
|
ConsumeChar();
|
|
|
|
excess = '\0';
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* A convenience method to process a single character within a quote.
|
|
*/
|
|
|
|
private bool ProcessQuotedValueCharacter(char quote,
|
|
bool isNonLiteral,
|
|
char c,
|
|
int next,
|
|
StringBuilder sb,
|
|
ref bool escaped)
|
|
{
|
|
if (TomlSyntax.ShouldBeEscaped(c))
|
|
return AddError($"The character U+{(int) c:X8} must be escaped in a string!");
|
|
|
|
if (escaped)
|
|
{
|
|
sb.Append(c);
|
|
escaped = false;
|
|
return false;
|
|
}
|
|
|
|
if (c == quote) return true;
|
|
|
|
if (isNonLiteral && c == TomlSyntax.ESCAPE_SYMBOL)
|
|
if (next >= 0 && (char) next == quote)
|
|
escaped = true;
|
|
|
|
if (c == TomlSyntax.NEWLINE_CHARACTER)
|
|
return AddError("Encountered newline in single line string!");
|
|
|
|
sb.Append(c);
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Reads a single-line string.
|
|
* Assumes the cursor is at the first character that belongs to the string.
|
|
* Consumes all characters that belong to the string (including the closing quote).
|
|
*
|
|
* Example:
|
|
* "test" ==> "test"
|
|
* ^ ^
|
|
*/
|
|
|
|
private string ReadQuotedValueSingleLine(char quote, char initialData = '\0')
|
|
{
|
|
var isNonLiteral = quote == TomlSyntax.BASIC_STRING_SYMBOL;
|
|
var sb = new StringBuilder();
|
|
|
|
var escaped = false;
|
|
|
|
if (initialData != '\0')
|
|
{
|
|
var shouldReturn =
|
|
ProcessQuotedValueCharacter(quote, isNonLiteral, initialData, reader.Peek(), sb, ref escaped);
|
|
|
|
if (currentState == ParseState.None)
|
|
return null;
|
|
|
|
if (shouldReturn)
|
|
return isNonLiteral ? sb.ToString().Unescape() : sb.ToString();
|
|
}
|
|
|
|
int cur;
|
|
while ((cur = reader.Read()) >= 0)
|
|
{
|
|
// Consume the character
|
|
col++;
|
|
var c = (char) cur;
|
|
if (ProcessQuotedValueCharacter(quote, isNonLiteral, c, reader.Peek(), sb, ref escaped))
|
|
{
|
|
if (currentState == ParseState.None)
|
|
return null;
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
return isNonLiteral ? sb.ToString().Unescape() : sb.ToString();
|
|
}
|
|
|
|
/**
|
|
* Reads a multiline string.
|
|
* Assumes the cursor is at the first character that belongs to the string.
|
|
* Consumes all characters that belong to the string and the three closing quotes.
|
|
*
|
|
* Example:
|
|
* """test""" ==> """test"""
|
|
* ^ ^
|
|
*/
|
|
|
|
private string ReadQuotedValueMultiLine(char quote)
|
|
{
|
|
var isBasic = quote == TomlSyntax.BASIC_STRING_SYMBOL;
|
|
var sb = new StringBuilder();
|
|
|
|
var escaped = false;
|
|
var skipWhitespace = false;
|
|
var quotesEncountered = 0;
|
|
var first = true;
|
|
|
|
int cur;
|
|
while ((cur = ConsumeChar()) >= 0)
|
|
{
|
|
var c = (char) cur;
|
|
|
|
if (TomlSyntax.ShouldBeEscaped(c))
|
|
throw new Exception($"The character U+{(int) c:X8} must be escaped!");
|
|
|
|
// Trim the first newline
|
|
if (first && TomlSyntax.IsNewLine(c))
|
|
{
|
|
if (TomlSyntax.IsLineBreak(c))
|
|
first = false;
|
|
else
|
|
AdvanceLine();
|
|
|
|
continue;
|
|
}
|
|
|
|
first = false;
|
|
|
|
//TODO: Reuse ProcessQuotedValueCharacter
|
|
|
|
// Skip the current character if it is going to be escaped later
|
|
if (escaped)
|
|
{
|
|
sb.Append(c);
|
|
escaped = false;
|
|
continue;
|
|
}
|
|
|
|
// If we are currently skipping empty spaces, skip
|
|
if (skipWhitespace)
|
|
{
|
|
if (TomlSyntax.IsEmptySpace(c))
|
|
{
|
|
if (TomlSyntax.IsLineBreak(c))
|
|
AdvanceLine();
|
|
continue;
|
|
}
|
|
|
|
skipWhitespace = false;
|
|
}
|
|
|
|
// If we encounter an escape sequence...
|
|
if (isBasic && c == TomlSyntax.ESCAPE_SYMBOL)
|
|
{
|
|
var next = reader.Peek();
|
|
if (next >= 0)
|
|
{
|
|
// ...and the next char is empty space, we must skip all whitespaces
|
|
if (TomlSyntax.IsEmptySpace((char) next))
|
|
{
|
|
skipWhitespace = true;
|
|
continue;
|
|
}
|
|
|
|
// ...and we have \", skip the character
|
|
if ((char) next == quote) escaped = true;
|
|
}
|
|
}
|
|
|
|
// Count the consecutive quotes
|
|
if (c == quote)
|
|
quotesEncountered++;
|
|
else
|
|
quotesEncountered = 0;
|
|
|
|
// If the are three quotes, count them as closing quotes
|
|
if (quotesEncountered == 3) break;
|
|
|
|
sb.Append(c);
|
|
}
|
|
|
|
// Remove last two quotes (third one wasn't included by default
|
|
sb.Length -= 2;
|
|
|
|
return isBasic ? sb.ToString().Unescape() : sb.ToString();
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Node creation
|
|
|
|
private bool InsertNode(TomlNode node, TomlNode root, List<string> path)
|
|
{
|
|
var latestNode = root;
|
|
|
|
if (path.Count > 1)
|
|
for (var index = 0; index < path.Count - 1; index++)
|
|
{
|
|
var subkey = path[index];
|
|
if (latestNode.TryGetNode(subkey, out var currentNode))
|
|
{
|
|
if (currentNode.HasValue)
|
|
return AddError($"The key {".".Join(path)} already has a value assigned to it!");
|
|
}
|
|
else
|
|
{
|
|
currentNode = new TomlTable();
|
|
latestNode[subkey] = currentNode;
|
|
}
|
|
|
|
latestNode = currentNode;
|
|
}
|
|
|
|
if (latestNode.HasKey(path[path.Count - 1]))
|
|
return AddError($"The key {".".Join(path)} is already defined!");
|
|
|
|
latestNode[path[path.Count - 1]] = node;
|
|
node.CollapseLevel = path.Count - 1;
|
|
|
|
return true;
|
|
}
|
|
|
|
private TomlTable CreateTable(TomlNode root, List<string> path, bool arrayTable)
|
|
{
|
|
if (path.Count == 0) return null;
|
|
|
|
var latestNode = root;
|
|
|
|
for (var index = 0; index < path.Count; index++)
|
|
{
|
|
var subkey = path[index];
|
|
|
|
if (latestNode.TryGetNode(subkey, out var node))
|
|
{
|
|
if (node.IsArray && arrayTable)
|
|
{
|
|
var arr = (TomlArray) node;
|
|
|
|
if (!arr.IsTableArray)
|
|
{
|
|
AddError($"The array {".".Join(path)} cannot be redefined as an array table!");
|
|
return null;
|
|
}
|
|
|
|
if (index == path.Count - 1)
|
|
{
|
|
latestNode = new TomlTable();
|
|
arr.Add(latestNode);
|
|
break;
|
|
}
|
|
|
|
latestNode = arr[arr.ChildrenCount - 1];
|
|
continue;
|
|
}
|
|
|
|
if (node.HasValue)
|
|
{
|
|
if (!(node is TomlArray array) || !array.IsTableArray)
|
|
{
|
|
AddError($"The key {".".Join(path)} has a value assigned to it!");
|
|
return null;
|
|
}
|
|
|
|
latestNode = array[array.ChildrenCount - 1];
|
|
continue;
|
|
}
|
|
|
|
if (index == path.Count - 1)
|
|
{
|
|
if (arrayTable && !node.IsArray)
|
|
{
|
|
AddError($"The table {".".Join(path)} cannot be redefined as an array table!");
|
|
return null;
|
|
}
|
|
|
|
if (node is TomlTable tbl && !tbl.IsInline)
|
|
{
|
|
AddError($"The table {".".Join(path)} is defined multiple times!");
|
|
return null;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (index == path.Count - 1 && arrayTable)
|
|
{
|
|
var table = new TomlTable();
|
|
var arr = new TomlArray
|
|
{
|
|
IsTableArray = true
|
|
};
|
|
arr.Add(table);
|
|
latestNode[subkey] = arr;
|
|
latestNode = table;
|
|
break;
|
|
}
|
|
|
|
node = new TomlTable
|
|
{
|
|
IsInline = true
|
|
};
|
|
latestNode[subkey] = node;
|
|
}
|
|
|
|
latestNode = node;
|
|
}
|
|
|
|
var result = (TomlTable) latestNode;
|
|
return result;
|
|
}
|
|
|
|
#endregion
|
|
}
|
|
|
|
#endregion
|
|
|
|
public static class TOML
|
|
{
|
|
public static bool ForceASCII { get; set; } = false;
|
|
|
|
public static TomlTable Parse(TextReader reader)
|
|
{
|
|
using (var parser = new TOMLParser(reader) {ForceASCII = ForceASCII})
|
|
{
|
|
return parser.Parse();
|
|
}
|
|
}
|
|
}
|
|
|
|
#region Exception Types
|
|
|
|
public class TomlFormatException : Exception
|
|
{
|
|
public TomlFormatException(string message) : base(message) { }
|
|
}
|
|
|
|
public class TomlParseException : Exception
|
|
{
|
|
public TomlParseException(TomlTable parsed, IEnumerable<TomlSyntaxException> exceptions) :
|
|
base("TOML file contains format errors")
|
|
{
|
|
ParsedTable = parsed;
|
|
SyntaxErrors = exceptions;
|
|
}
|
|
|
|
public TomlTable ParsedTable { get; }
|
|
|
|
public IEnumerable<TomlSyntaxException> SyntaxErrors { get; }
|
|
}
|
|
|
|
public class TomlSyntaxException : Exception
|
|
{
|
|
public TomlSyntaxException(string message, TOMLParser.ParseState state, int line, int col) : base(message)
|
|
{
|
|
ParseState = state;
|
|
Line = line;
|
|
Column = col;
|
|
}
|
|
|
|
public TOMLParser.ParseState ParseState { get; }
|
|
|
|
public int Line { get; }
|
|
|
|
public int Column { get; }
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Parse utilities
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internal static class TomlSyntax
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{
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#region Type Patterns
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public const string TRUE_VALUE = "true";
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public const string FALSE_VALUE = "false";
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public const string NAN_VALUE = "nan";
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public const string POS_NAN_VALUE = "+nan";
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public const string NEG_NAN_VALUE = "-nan";
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public const string INF_VALUE = "inf";
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public const string POS_INF_VALUE = "+inf";
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public const string NEG_INF_VALUE = "-inf";
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public static bool IsBoolean(string s) => s == TRUE_VALUE || s == FALSE_VALUE;
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public static bool IsPosInf(string s) => s == INF_VALUE || s == POS_INF_VALUE;
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public static bool IsNegInf(string s) => s == NEG_INF_VALUE;
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public static bool IsNaN(string s) => s == NAN_VALUE || s == POS_NAN_VALUE || s == NEG_NAN_VALUE;
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public static bool IsInteger(string s) => IntegerPattern.IsMatch(s);
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public static bool IsFloat(string s) => FloatPattern.IsMatch(s);
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public static bool IsIntegerWithBase(string s, out int numberBase)
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{
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numberBase = 10;
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var match = BasedIntegerPattern.Match(s);
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if (!match.Success) return false;
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IntegerBases.TryGetValue(match.Groups["base"].Value, out numberBase);
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return true;
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}
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/**
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* A pattern to verify the integer value according to the TOML specification.
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*/
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public static readonly Regex IntegerPattern =
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new Regex(@"^(\+|-)?(?!_)(0|(?!0)(_?\d)*)$", RegexOptions.Compiled);
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/**
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* A pattern to verify a special 0x, 0o and 0b forms of an integer according to the TOML specification.
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*/
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public static readonly Regex BasedIntegerPattern =
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new Regex(@"^(\+|-)?0(?<base>x|b|o)(?!_)(_?[0-9A-F])*$", RegexOptions.Compiled | RegexOptions.IgnoreCase);
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/**
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* A pattern to verify the float value according to the TOML specification.
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*/
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public static readonly Regex FloatPattern =
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new
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Regex(@"^(\+|-)?(?!_)(0|(?!0)(_?\d)+)(((e(\+|-)?(?!_)(_?\d)+)?)|(\.(?!_)(_?\d)+(e(\+|-)?(?!_)(_?\d)+)?))$",
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RegexOptions.Compiled | RegexOptions.IgnoreCase);
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/**
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* A helper dictionary to map TOML base codes into the radii.
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*/
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public static readonly Dictionary<string, int> IntegerBases = new Dictionary<string, int>
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{
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["x"] = 16,
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["o"] = 8,
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["b"] = 2
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};
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/**
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* A helper dictionary to map non-decimal bases to their TOML identifiers
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*/
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public static readonly Dictionary<int, string> BaseIdentifiers = new Dictionary<int, string>
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{
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[2] = "b",
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[8] = "o",
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[16] = "x"
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};
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/**
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* Valid date formats with timezone as per RFC3339.
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*/
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public static readonly string[] RFC3339Formats =
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{
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"yyyy'-'MM-dd HH':'mm':'ssK", "yyyy'-'MM-dd HH':'mm':'ss'.'fK", "yyyy'-'MM-dd HH':'mm':'ss'.'ffK",
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"yyyy'-'MM-dd HH':'mm':'ss'.'fffK", "yyyy'-'MM-dd HH':'mm':'ss'.'ffffK",
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"yyyy'-'MM-dd HH':'mm':'ss'.'fffffK", "yyyy'-'MM-dd HH':'mm':'ss'.'ffffffK",
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"yyyy'-'MM-dd HH':'mm':'ss'.'fffffffK"
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};
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/**
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* Valid date formats without timezone (assumes local) as per RFC3339.
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*/
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public static readonly string[] RFC3339LocalDateTimeFormats =
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{
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"yyyy'-'MM-dd HH':'mm':'ss", "yyyy'-'MM-dd HH':'mm':'ss'.'f", "yyyy'-'MM-dd HH':'mm':'ss'.'ff",
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"yyyy'-'MM-dd HH':'mm':'ss'.'fff", "yyyy'-'MM-dd HH':'mm':'ss'.'ffff",
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"yyyy'-'MM-dd HH':'mm':'ss'.'fffff", "yyyy'-'MM-dd HH':'mm':'ss'.'ffffff",
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"yyyy'-'MM-dd HH':'mm':'ss'.'fffffff"
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};
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/**
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* Valid full date format as per TOML spec.
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*/
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public static readonly string LocalDateFormat = "yyyy'-'MM'-'dd";
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/**
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* Valid time formats as per TOML spec.
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*/
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public static readonly string[] RFC3339LocalTimeFormats =
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{
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"HH':'mm':'ss", "HH':'mm':'ss'.'f", "HH':'mm':'ss'.'ff", "HH':'mm':'ss'.'fff", "HH':'mm':'ss'.'ffff",
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"HH':'mm':'ss'.'fffff", "HH':'mm':'ss'.'ffffff", "HH':'mm':'ss'.'fffffff"
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};
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#endregion
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#region Character definitions
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public const char ARRAY_END_SYMBOL = ']';
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public const char ITEM_SEPARATOR = ',';
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public const char ARRAY_START_SYMBOL = '[';
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public const char BASIC_STRING_SYMBOL = '\"';
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public const char COMMENT_SYMBOL = '#';
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public const char ESCAPE_SYMBOL = '\\';
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public const char KEY_VALUE_SEPARATOR = '=';
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public const char NEWLINE_CARRIAGE_RETURN_CHARACTER = '\r';
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public const char NEWLINE_CHARACTER = '\n';
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public const char SUBKEY_SEPARATOR = '.';
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public const char TABLE_END_SYMBOL = ']';
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public const char TABLE_START_SYMBOL = '[';
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public const char INLINE_TABLE_START_SYMBOL = '{';
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public const char INLINE_TABLE_END_SYMBOL = '}';
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public const char LITERAL_STRING_SYMBOL = '\'';
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public const char INT_NUMBER_SEPARATOR = '_';
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public static readonly char[] NewLineCharacters = {NEWLINE_CHARACTER, NEWLINE_CARRIAGE_RETURN_CHARACTER};
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public static bool IsQuoted(char c) => c == BASIC_STRING_SYMBOL || c == LITERAL_STRING_SYMBOL;
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public static bool IsWhiteSpace(char c) => c == ' ' || c == '\t';
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public static bool IsNewLine(char c) => c == NEWLINE_CHARACTER || c == NEWLINE_CARRIAGE_RETURN_CHARACTER;
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public static bool IsLineBreak(char c) => c == NEWLINE_CHARACTER;
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public static bool IsEmptySpace(char c) => IsWhiteSpace(c) || IsNewLine(c);
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public static bool IsBareKey(char c) =>
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'A' <= c && c <= 'Z' || 'a' <= c && c <= 'z' || '0' <= c && c <= '9' || c == '_' || c == '-';
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public static bool ShouldBeEscaped(char c) => (c <= '\u001f' || c == '\u007f') && !IsNewLine(c);
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public static bool IsValueSeparator(char c) =>
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c == ITEM_SEPARATOR || c == ARRAY_END_SYMBOL || c == INLINE_TABLE_END_SYMBOL;
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#endregion
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}
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internal static class StringUtils
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{
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public static string AsKey(this string key)
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{
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var quote = false;
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foreach (var c in key)
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{
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if (TomlSyntax.IsBareKey(c)) continue;
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quote = true;
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break;
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}
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return !quote ? key : $"{TomlSyntax.BASIC_STRING_SYMBOL}{key.Escape()}{TomlSyntax.BASIC_STRING_SYMBOL}";
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}
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public static string Join(this string self, IEnumerable<string> subItems)
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{
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var sb = new StringBuilder();
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var first = true;
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foreach (var subItem in subItems)
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{
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if (!first) sb.Append(self);
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first = false;
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sb.Append(subItem);
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}
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return sb.ToString();
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}
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public static bool TryParseDateTime(string s,
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string[] formats,
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DateTimeStyles styles,
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out DateTime dateTime,
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out int parsedFormat)
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{
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parsedFormat = 0;
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dateTime = new DateTime();
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for (var i = 0; i < formats.Length; i++)
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{
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var format = formats[i];
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if (!DateTime.TryParseExact(s, format, CultureInfo.InvariantCulture, styles, out dateTime)) continue;
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parsedFormat = i;
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return true;
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}
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return false;
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}
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public static void AsComment(this string self, TextWriter tw)
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{
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foreach (var line in self.Split(TomlSyntax.NEWLINE_CHARACTER))
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tw.WriteLine($"{TomlSyntax.COMMENT_SYMBOL} {line.Trim()}");
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}
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public static string RemoveAll(this string txt, char toRemove)
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{
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var sb = new StringBuilder(txt.Length);
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foreach (var c in txt)
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if (c != toRemove)
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sb.Append(c);
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return sb.ToString();
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}
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public static string Escape(this string txt, bool escapeNewlines = true)
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{
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var stringBuilder = new StringBuilder(txt.Length + 2);
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for (var i = 0; i < txt.Length; i++)
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{
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var c = txt[i];
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switch (c)
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{
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case '\b':
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stringBuilder.Append(@"\b");
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break;
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case '\t':
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stringBuilder.Append(@"\t");
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break;
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case '\n' when escapeNewlines:
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stringBuilder.Append(@"\n");
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break;
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case '\f':
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stringBuilder.Append(@"\f");
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break;
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case '\r' when escapeNewlines:
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stringBuilder.Append(@"\r");
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break;
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case '\\':
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stringBuilder.Append(@"\");
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break;
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case '\"':
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stringBuilder.Append(@"\""");
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break;
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default:
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if (TomlSyntax.ShouldBeEscaped(c) || TOML.ForceASCII && c > sbyte.MaxValue)
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{
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if (char.IsSurrogatePair(txt, i))
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stringBuilder.Append("\\U").Append(char.ConvertToUtf32(txt, i++).ToString("X8"));
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else
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stringBuilder.Append("\\u").Append(((ushort) c).ToString("X4"));
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}
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else
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{
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stringBuilder.Append(c);
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}
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break;
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}
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}
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return stringBuilder.ToString();
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}
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public static string Unescape(this string txt)
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{
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if (string.IsNullOrEmpty(txt)) return txt;
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var stringBuilder = new StringBuilder(txt.Length);
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for (var i = 0; i < txt.Length;)
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{
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var num = txt.IndexOf('\\', i);
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var next = num + 1;
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if (num < 0 || num == txt.Length - 1) num = txt.Length;
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stringBuilder.Append(txt, i, num - i);
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if (num >= txt.Length) break;
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var c = txt[next];
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switch (c)
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{
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case 'b':
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stringBuilder.Append('\b');
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break;
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case 't':
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stringBuilder.Append('\t');
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break;
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case 'n':
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stringBuilder.Append('\n');
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break;
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case 'f':
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stringBuilder.Append('\f');
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break;
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case 'r':
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stringBuilder.Append('\r');
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break;
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case '\'':
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stringBuilder.Append('\'');
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break;
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case '\"':
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stringBuilder.Append('\"');
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break;
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case '\\':
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stringBuilder.Append('\\');
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break;
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case 'u':
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if (next + 4 >= txt.Length) throw new Exception("Undefined escape sequence!");
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stringBuilder.Append(char.ConvertFromUtf32(Convert.ToInt32(txt.Substring(next + 1, 4), 16)));
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num += 4;
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break;
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case 'U':
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if (next + 8 >= txt.Length) throw new Exception("Undefined escape sequence!");
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stringBuilder.Append(char.ConvertFromUtf32(Convert.ToInt32(txt.Substring(next + 1, 8), 16)));
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num += 8;
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break;
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default:
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throw new Exception("Undefined escape sequence!");
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}
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i = num + 2;
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}
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return stringBuilder.ToString();
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}
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}
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#endregion
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} |